If placed on the ballot and approved by voters, the measure would increase the sales tax by a tenth of 1 percent to pay for increased bus frequency, including what's described as "bus rapid transit" service in five corridors and more frequent service on 35 other routes across the county.

The change would raise the sales tax from 8.8 percent to 8.9 percent in urban areas of the county -- about 1 cent on a $10 purchase.